Star System Generated (Seed: 1767001730)
Star Details
Spectral Class: M8V
Temperature: 2,617 K
Mass: 0.28 sol
Luminosity: 0.01 lux
Habitable Zone (HZ)
Inner Boundary: 0.1 AU
Outer Boundary: 0.14 AU
Physical Limits
Snow Line: 0.48 AU
Max System Radius: 10.6 AU
Planetary System (6 Planets)
Planet 1 - Gas Giant
Semi-Major Axis: 2 AU
Status: Outer (Cold)
Composition: Hydrogen/Helium Atmosphere
Physical Data
Mass: 12.1
Radius: 8.2
Gravity: 0.18 G
Time & Orbit
Eccentricity (e): 0.185
Orbit Range: 1.63 AU - 2.37 AU
Year: 1952 Days
Day: 15 Hours
Environment
Temp: -193 °C
Axial Tilt: 19.1 °
Atmosphere: Hâ‚‚, CHâ‚„
Biome: None
Satellites (32)
Outer Limit: 90,116,586 km
- M1: 103,372 km (0.087 R)
- M2: 181,163 km (0.099 R)
- M3: 325,974 km (0.117 R)
- M4: 379,231 km (0.039 R)
- M5: 504,893 km (0.08 R)
- M6: 557,102 km (0.094 R)
- M7: 645,365 km (0.106 R)
- M8: 699,520 km (0.067 R)
- M9: 1,002,156 km (0.102 R)
- M10: 1,115,701 km (0.108 R)
- M11: 1,174,194 km (0.069 R)
- M12: 1,273,975 km (0.066 R)
- M13: 1,368,372 km (0.057 R)
- M14: 1,551,330 km (0.111 R)
- M15: 1,674,748 km (0.084 R)
- M16: 1,751,193 km (0.083 R)
- M17: 1,903,334 km (0.112 R)
- M18: 1,997,580 km (0.084 R)
- M19: 2,210,608 km (0.102 R)
- M20: 2,380,252 km (0.062 R)
- M21: 2,627,238 km (0.056 R)
- M22: 2,823,211 km (0.073 R)
- M23: 2,991,209 km (0.099 R)
- M24: 3,046,112 km (0.099 R)
- M25: 3,168,034 km (0.028 R)
- M26: 3,257,793 km (0.052 R)
- M27: 3,388,392 km (0.083 R)
- M28: 3,537,990 km (0.119 R)
- M29: 3,701,500 km (0.079 R)
- M30: 3,766,575 km (0.105 R)
- M31: 3,855,736 km (0.071 R)
- M32: 3,975,713 km (0.093 R)
Planet 2 - Gas Giant
Semi-Major Axis: 2.78 AU
Status: Outer (Cold)
Composition: Hydrogen/Helium Atmosphere
Physical Data
Mass: 238.7
Radius: 12.3
Gravity: 1.58 G
Time & Orbit
Eccentricity (e): 0.085
Orbit Range: 2.54 AU - 3.02 AU
Year: 3199 Days
Day: 5.8 Hours
Environment
Temp: -212 °C
Axial Tilt: 38.7 °
Atmosphere: Hâ‚‚, CHâ‚„
Biome: None
Satellites (71)
Outer Limit: 90,116,586 km
- M1: 153,487 km (0.11 R)
- M2: 242,349 km (0.095 R)
- M3: 430,094 km (0.079 R)
- M4: 540,198 km (0.096 R)
- M5: 639,680 km (0.09 R)
- M6: 810,671 km (0.077 R)
- M7: 919,429 km (0.108 R)
- M8: 1,006,794 km (0.104 R)
- M9: 1,124,976 km (0.108 R)
- M10: 1,386,323 km (0.051 R)
- M11: 1,529,638 km (0.119 R)
- M12: 1,765,404 km (0.067 R)
- M13: 1,865,336 km (0.086 R)
- M14: 2,176,948 km (0.108 R)
- M15: 2,260,573 km (0.12 R)
- M16: 2,394,164 km (0.086 R)
- M17: 2,593,279 km (0.049 R)
- M18: 2,707,721 km (0.12 R)
- M19: 2,902,348 km (0.099 R)
- M20: 3,142,154 km (0.043 R)
- M21: 3,250,762 km (0.053 R)
- M22: 3,374,629 km (0.11 R)
- M23: 3,655,424 km (0.093 R)
- M24: 3,842,272 km (0.097 R)
- M25: 4,091,203 km (0.086 R)
- M26: 4,210,282 km (0.112 R)
- M27: 4,467,142 km (0.086 R)
- M28: 4,713,530 km (0.075 R)
- M29: 4,948,698 km (0.048 R)
- M30: 5,155,741 km (0.064 R)
- M31: 5,268,388 km (0.079 R)
- M32: 5,594,811 km (0.079 R)
- M33: 5,944,870 km (0.081 R)
- M34: 6,097,011 km (0.057 R)
- M35: 6,405,332 km (0.101 R)
- M36: 7,072,987 km (0.089 R)
- M37: 7,180,399 km (0.1 R)
- M38: 7,324,611 km (0.068 R)
- M39: 7,670,780 km (0.106 R)
- M40: 7,781,333 km (0.093 R)
- M41: 8,078,435 km (0.067 R)
- M42: 8,172,083 km (0.103 R)
- M43: 8,398,424 km (0.083 R)
- M44: 8,684,156 km (0.117 R)
- M45: 8,953,732 km (0.039 R)
- M46: 9,050,671 km (0.099 R)
- M47: 9,899,041 km (0.108 R)
- M48: 10,019,317 km (0.116 R)
- M49: 10,140,192 km (0.079 R)
- M50: 10,322,552 km (0.065 R)
- M51: 10,526,305 km (0.086 R)
- M52: 10,772,692 km (0.073 R)
- M53: 10,875,915 km (0.066 R)
- M54: 10,958,642 km (0.077 R)
- M55: 11,166,583 km (0.107 R)
- M56: 11,734,607 km (0.101 R)
- M57: 11,904,699 km (0.118 R)
- M58: 11,989,970 km (0.115 R)
- M59: 12,139,867 km (0.11 R)
- M60: 12,463,148 km (0.093 R)
- M61: 12,593,298 km (0.049 R)
- M62: 12,723,897 km (0.117 R)
- M63: 12,986,292 km (0.103 R)
- M64: 13,272,772 km (0.102 R)
- M65: 13,583,487 km (0.03 R)
- M66: 14,099,300 km (0.113 R)
- M67: 14,234,985 km (0.097 R)
- M68: 14,598,807 km (0.065 R)
- M69: 14,735,989 km (0.097 R)
- M70: 14,850,730 km (0.054 R)
- M71: 15,103,999 km (0.11 R)
Planet 3 - Gas Giant
Semi-Major Axis: 3.61 AU
Status: Outer (Cold)
Composition: Hydrogen/Helium Atmosphere
Physical Data
Mass: 144.7
Radius: 11.5
Gravity: 1.09 G
Time & Orbit
Eccentricity (e): 0.134
Orbit Range: 3.13 AU - 4.09 AU
Year: 4734 Days
Day: 13.9 Hours
Environment
Temp: -213 °C
Axial Tilt: 24.7 °
Atmosphere: Hâ‚‚, CHâ‚„
Biome: None
Satellites (68)
Outer Limit: 90,116,586 km
- M1: 184,604 km (0.054 R)
- M2: 291,117 km (0.075 R)
- M3: 434,582 km (0.066 R)
- M4: 622,926 km (0.105 R)
- M5: 813,663 km (0.074 R)
- M6: 996,023 km (0.119 R)
- M7: 1,162,226 km (0.113 R)
- M8: 1,359,097 km (0.11 R)
- M9: 1,467,406 km (0.05 R)
- M10: 1,589,926 km (0.054 R)
- M11: 1,739,225 km (0.064 R)
- M12: 1,857,557 km (0.064 R)
- M13: 2,318,617 km (0.086 R)
- M14: 2,529,102 km (0.102 R)
- M15: 3,082,763 km (0.094 R)
- M16: 3,256,147 km (0.049 R)
- M17: 3,492,512 km (0.037 R)
- M18: 3,582,719 km (0.12 R)
- M19: 3,919,913 km (0.102 R)
- M20: 4,155,679 km (0.074 R)
- M21: 4,380,076 km (0.102 R)
- M22: 4,575,600 km (0.102 R)
- M23: 4,740,757 km (0.07 R)
- M24: 5,077,202 km (0.119 R)
- M25: 5,456,134 km (0.074 R)
- M26: 5,880,094 km (0.084 R)
- M27: 6,685,080 km (0.099 R)
- M28: 6,816,427 km (0.04 R)
- M29: 6,929,523 km (0.112 R)
- M30: 7,138,810 km (0.094 R)
- M31: 7,369,341 km (0.103 R)
- M32: 7,524,474 km (0.036 R)
- M33: 8,376,882 km (0.115 R)
- M34: 8,722,304 km (0.098 R)
- M35: 8,948,346 km (0.098 R)
- M36: 9,072,512 km (0.029 R)
- M37: 9,218,071 km (0.071 R)
- M38: 9,364,378 km (0.09 R)
- M39: 9,532,526 km (0.11 R)
- M40: 9,765,450 km (0.1 R)
- M41: 9,935,991 km (0.076 R)
- M42: 10,150,515 km (0.114 R)
- M43: 10,280,066 km (0.109 R)
- M44: 10,781,519 km (0.028 R)
- M45: 10,935,754 km (0.082 R)
- M46: 11,492,707 km (0.065 R)
- M47: 11,627,644 km (0.044 R)
- M48: 11,740,590 km (0.081 R)
- M49: 11,922,053 km (0.107 R)
- M50: 12,081,524 km (0.083 R)
- M51: 12,587,614 km (0.084 R)
- M52: 12,726,740 km (0.083 R)
- M53: 12,983,450 km (0.073 R)
- M54: 13,834,961 km (0.105 R)
- M55: 13,978,724 km (0.101 R)
- M56: 14,147,022 km (0.095 R)
- M57: 14,340,153 km (0.053 R)
- M58: 14,461,327 km (0.103 R)
- M59: 14,534,181 km (0.049 R)
- M60: 14,631,569 km (0.119 R)
- M61: 14,949,465 km (0.068 R)
- M62: 15,442,988 km (0.104 R)
- M63: 15,567,154 km (0.116 R)
- M64: 16,420,760 km (0.074 R)
- M65: 16,802,085 km (0.109 R)
- M66: 16,904,260 km (0.035 R)
- M67: 17,006,735 km (0.077 R)
- M68: 17,135,090 km (0.031 R)
Planet 4 - Gas Giant
Semi-Major Axis: 3.8 AU
Status: Outer (Cold)
Composition: Hydrogen/Helium Atmosphere
Physical Data
Mass: 689.4
Radius: 9.8
Gravity: 7.18 G
Time & Orbit
Eccentricity (e): 0.199
Orbit Range: 3.04 AU - 4.56 AU
Year: 5113 Days
Day: 14.9 Hours
Environment
Temp: -221 °C
Axial Tilt: 14 °
Atmosphere: Hâ‚‚, CHâ‚„
Biome: None
Satellites (78)
Outer Limit: 90,116,586 km
- M1: 147,952 km (0.083 R)
- M2: 640,578 km (0.098 R)
- M3: 1,089,372 km (0.094 R)
- M4: 1,268,590 km (0.081 R)
- M5: 1,639,293 km (0.099 R)
- M6: 1,863,690 km (0.118 R)
- M7: 2,595,822 km (0.107 R)
- M8: 3,257,194 km (0.104 R)
- M9: 3,540,533 km (0.071 R)
- M10: 3,718,853 km (0.067 R)
- M11: 3,786,472 km (0.032 R)
- M12: 3,854,539 km (0.079 R)
- M13: 4,015,057 km (0.104 R)
- M14: 4,509,777 km (0.113 R)
- M15: 4,582,033 km (0.066 R)
- M16: 4,924,313 km (0.068 R)
- M17: 5,148,860 km (0.116 R)
- M18: 5,685,766 km (0.111 R)
- M19: 5,790,186 km (0.068 R)
- M20: 5,974,191 km (0.114 R)
- M21: 6,053,777 km (0.043 R)
- M22: 6,375,263 km (0.092 R)
- M23: 6,592,778 km (0.102 R)
- M24: 7,035,139 km (0.089 R)
- M25: 7,344,956 km (0.107 R)
- M26: 8,036,248 km (0.114 R)
- M27: 8,124,062 km (0.061 R)
- M28: 8,212,325 km (0.105 R)
- M29: 8,959,716 km (0.052 R)
- M30: 9,142,375 km (0.052 R)
- M31: 9,357,048 km (0.098 R)
- M32: 9,480,466 km (0.055 R)
- M33: 9,948,109 km (0.071 R)
- M34: 10,359,353 km (0.076 R)
- M35: 10,519,124 km (0.114 R)
- M36: 11,198,897 km (0.05 R)
- M37: 11,726,229 km (0.093 R)
- M38: 11,826,011 km (0.077 R)
- M39: 12,329,258 km (0.117 R)
- M40: 12,396,876 km (0.098 R)
- M41: 13,045,533 km (0.041 R)
- M42: 13,321,990 km (0.061 R)
- M43: 13,810,427 km (0.068 R)
- M44: 13,986,354 km (0.116 R)
- M45: 14,589,832 km (0.087 R)
- M46: 14,984,920 km (0.11 R)
- M47: 16,154,176 km (0.054 R)
- M48: 16,228,227 km (0.051 R)
- M49: 16,376,629 km (0.117 R)
- M50: 16,749,726 km (0.101 R)
- M51: 16,937,321 km (0.028 R)
- M52: 17,238,911 km (0.113 R)
- M53: 17,885,772 km (0.104 R)
- M54: 17,962,366 km (0.116 R)
- M55: 18,192,896 km (0.102 R)
- M56: 18,347,132 km (0.087 R)
- M57: 18,890,471 km (0.067 R)
- M58: 19,517,735 km (0.113 R)
- M59: 19,636,067 km (0.095 R)
- M60: 19,715,204 km (0.055 R)
- M61: 20,112,087 km (0.115 R)
- M62: 20,431,479 km (0.077 R)
- M63: 21,075,348 km (0.111 R)
- M64: 21,766,789 km (0.11 R)
- M65: 21,848,619 km (0.065 R)
- M66: 22,963,423 km (0.089 R)
- M67: 23,088,337 km (0.095 R)
- M68: 23,464,725 km (0.115 R)
- M69: 23,843,208 km (0.109 R)
- M70: 24,265,971 km (0.072 R)
- M71: 24,350,943 km (0.084 R)
- M72: 24,990,474 km (0.093 R)
- M73: 26,199,225 km (0.082 R)
- M74: 26,810,781 km (0.088 R)
- M75: 27,074,372 km (0.103 R)
- M76: 27,338,712 km (0.076 R)
- M77: 28,628,545 km (0.075 R)
- M78: 29,756,512 km (0.1 R)
Planet 5 - Gas Giant
Semi-Major Axis: 5.4 AU
Status: Outer (Cold)
Composition: Hydrogen/Helium Atmosphere
Physical Data
Mass: 530.9
Radius: 9.3
Gravity: 6.14 G
Time & Orbit
Eccentricity (e): 0.042
Orbit Range: 5.17 AU - 5.63 AU
Year: 8662 Days
Day: 11.7 Hours
Environment
Temp: -231 °C
Axial Tilt: 11.8 °
Atmosphere: Hâ‚‚, CHâ‚„
Biome: None
Satellites (83)
Outer Limit: 90,116,586 km
- M1: 122,221 km (0.1 R)
- M2: 181,761 km (0.084 R)
- M3: 273,315 km (0.113 R)
- M4: 354,846 km (0.044 R)
- M5: 746,493 km (0.091 R)
- M6: 807,529 km (0.102 R)
- M7: 968,048 km (0.115 R)
- M8: 1,156,990 km (0.097 R)
- M9: 1,472,941 km (0.061 R)
- M10: 1,531,583 km (0.032 R)
- M11: 1,878,650 km (0.078 R)
- M12: 2,094,370 km (0.091 R)
- M13: 2,692,762 km (0.034 R)
- M14: 3,187,482 km (0.064 R)
- M15: 3,445,538 km (0.094 R)
- M16: 4,203,999 km (0.116 R)
- M17: 5,496,076 km (0.075 R)
- M18: 5,650,312 km (0.118 R)
- M19: 5,931,406 km (0.071 R)
- M20: 6,121,395 km (0.087 R)
- M21: 6,539,970 km (0.115 R)
- M22: 7,269,260 km (0.111 R)
- M23: 7,575,038 km (0.073 R)
- M24: 7,885,154 km (0.111 R)
- M25: 8,269,770 km (0.087 R)
- M26: 9,719,673 km (0.089 R)
- M27: 10,207,661 km (0.11 R)
- M28: 10,283,358 km (0.082 R)
- M29: 10,359,353 km (0.069 R)
- M30: 11,285,514 km (0.068 R)
- M31: 11,600,268 km (0.102 R)
- M32: 11,758,692 km (0.037 R)
- M33: 12,117,727 km (0.055 R)
- M34: 12,683,356 km (0.081 R)
- M35: 13,216,373 km (0.059 R)
- M36: 13,423,267 km (0.115 R)
- M37: 13,714,834 km (0.079 R)
- M38: 13,882,383 km (0.041 R)
- M39: 14,261,913 km (0.111 R)
- M40: 14,988,061 km (0.115 R)
- M41: 16,121,714 km (0.117 R)
- M42: 16,431,531 km (0.113 R)
- M43: 16,520,542 km (0.108 R)
- M44: 16,788,172 km (0.111 R)
- M45: 17,554,562 km (0.041 R)
- M46: 17,827,728 km (0.095 R)
- M47: 19,167,975 km (0.057 R)
- M48: 19,496,342 km (0.065 R)
- M49: 19,779,232 km (0.102 R)
- M50: 20,253,757 km (0.105 R)
- M51: 20,540,386 km (0.091 R)
- M52: 21,069,215 km (0.106 R)
- M53: 21,165,705 km (0.1 R)
- M54: 21,797,457 km (0.09 R)
- M55: 21,993,131 km (0.092 R)
- M56: 22,930,362 km (0.112 R)
- M57: 23,129,327 km (0.053 R)
- M58: 23,328,741 km (0.055 R)
- M59: 23,629,133 km (0.069 R)
- M60: 23,779,928 km (0.06 R)
- M61: 24,436,513 km (0.113 R)
- M62: 24,690,680 km (0.077 R)
- M63: 25,150,244 km (0.083 R)
- M64: 25,252,719 km (0.068 R)
- M65: 26,078,050 km (0.051 R)
- M66: 26,337,752 km (0.112 R)
- M67: 27,017,076 km (0.088 R)
- M68: 27,122,094 km (0.03 R)
- M69: 28,126,494 km (0.085 R)
- M70: 28,767,072 km (0.106 R)
- M71: 29,520,597 km (0.115 R)
- M72: 30,335,157 km (0.094 R)
- M73: 31,432,607 km (0.114 R)
- M74: 31,708,914 km (0.038 R)
- M75: 33,722,801 km (0.097 R)
- M76: 34,403,322 km (0.106 R)
- M77: 35,260,218 km (0.1 R)
- M78: 35,835,422 km (0.108 R)
- M79: 37,286,970 km (0.061 R)
- M80: 38,875,999 km (0.082 R)
- M81: 39,054,020 km (0.091 R)
- M82: 39,649,120 km (0.113 R)
- M83: 39,947,718 km (0.059 R)
Planet 6 - Ice Giant
Semi-Major Axis: 10.06 AU
Status: Outer (Cold)
Composition: Methane/Ammonia Ices
Physical Data
Mass: 938.4
Radius: 5.8
Gravity: 27.9 G
Time & Orbit
Eccentricity (e): 0.162
Orbit Range: 8.43 AU - 11.69 AU
Year: 22025 Days
Day: 21.6 Hours
Environment
Temp: -225 °C
Axial Tilt: 34.2 °
Atmosphere: Hâ‚‚, CHâ‚„
Biome: None
Satellites (95)
Outer Limit: 90,116,586 km
- M1: 113,994 km (0.084 R)
- M2: 326,871 km (0.108 R)
- M3: 449,691 km (0.042 R)
- M4: 563,535 km (0.098 R)
- M5: 687,253 km (0.044 R)
- M6: 1,495,979 km (0.069 R)
- M7: 1,739,823 km (0.107 R)
- M8: 2,382,795 km (0.091 R)
- M9: 2,543,912 km (0.106 R)
- M10: 3,629,693 km (0.085 R)
- M11: 3,721,995 km (0.05 R)
- M12: 4,688,248 km (0.081 R)
- M13: 4,738,513 km (0.111 R)
- M14: 4,839,641 km (0.054 R)
- M15: 6,327,990 km (0.115 R)
- M16: 6,439,440 km (0.042 R)
- M17: 6,777,382 km (0.109 R)
- M18: 7,412,126 km (0.076 R)
- M19: 8,552,510 km (0.087 R)
- M20: 8,799,496 km (0.066 R)
- M21: 11,463,086 km (0.034 R)
- M22: 13,413,244 km (0.103 R)
- M23: 13,484,902 km (0.097 R)
- M24: 13,844,385 km (0.114 R)
- M25: 14,134,306 km (0.101 R)
- M26: 15,764,474 km (0.115 R)
- M27: 15,915,568 km (0.059 R)
- M28: 16,448,435 km (0.042 R)
- M29: 17,766,393 km (0.106 R)
- M30: 17,844,932 km (0.069 R)
- M31: 18,160,434 km (0.043 R)
- M32: 20,337,681 km (0.087 R)
- M33: 21,164,808 km (0.091 R)
- M34: 21,834,408 km (0.115 R)
- M35: 22,681,132 km (0.08 R)
- M36: 23,538,627 km (0.092 R)
- M37: 24,756,652 km (0.054 R)
- M38: 25,108,507 km (0.104 R)
- M39: 26,982,370 km (0.066 R)
- M40: 28,808,511 km (0.097 R)
- M41: 28,993,264 km (0.116 R)
- M42: 29,643,267 km (0.081 R)
- M43: 31,336,266 km (0.114 R)
- M44: 32,290,401 km (0.109 R)
- M45: 35,012,185 km (0.069 R)
- M46: 36,800,478 km (0.07 R)
- M47: 38,110,357 km (0.081 R)
- M48: 39,230,546 km (0.055 R)
- M49: 39,743,218 km (0.115 R)
- M50: 39,846,141 km (0.077 R)
- M51: 40,155,060 km (0.03 R)
- M52: 40,568,250 km (0.103 R)
- M53: 40,982,935 km (0.117 R)
- M54: 42,445,254 km (0.088 R)
- M55: 43,182,772 km (0.083 R)
- M56: 44,563,560 km (0.094 R)
- M57: 46,174,879 km (0.072 R)
- M58: 46,283,038 km (0.075 R)
- M59: 46,716,273 km (0.088 R)
- M60: 47,041,948 km (0.08 R)
- M61: 47,586,634 km (0.11 R)
- M62: 47,695,840 km (0.071 R)
- M63: 49,012,601 km (0.107 R)
- M64: 50,008,025 km (0.1 R)
- M65: 51,345,580 km (0.116 R)
- M66: 52,243,765 km (0.12 R)
- M67: 52,694,803 km (0.114 R)
- M68: 59,495,971 km (0.103 R)
- M69: 60,557,517 km (0.119 R)
- M70: 61,982,437 km (0.073 R)
- M71: 63,298,449 km (0.109 R)
- M72: 66,933,827 km (0.117 R)
- M73: 68,776,873 km (0.102 R)
- M74: 68,900,291 km (0.109 R)
- M75: 70,387,593 km (0.025 R)
- M76: 71,635,090 km (0.108 R)
- M77: 72,763,956 km (0.103 R)
- M78: 73,519,874 km (0.16 R)
- M79: 76,441,520 km (0.042 R)
- M80: 78,109,536 km (0.079 R)
- M81: 78,754,303 km (0.058 R)
- M82: 79,789,520 km (0.196 R)
- M83: 80,438,925 km (0.094 R)
- M84: 80,568,925 km (0.063 R)
- M85: 80,829,375 km (0.141 R)
- M86: 81,220,424 km (0.103 R)
- M87: 81,612,071 km (0.109 R)
- M88: 83,053,746 km (0.087 R)
- M89: 85,165,619 km (0.07 R)
- M90: 86,894,522 km (0.09 R)
- M91: 87,027,963 km (0.093 R)
- M92: 87,428,736 km (0.093 R)
- M93: 87,562,476 km (0.074 R)
- M94: 88,098,186 km (0.053 R)
- M95: 88,366,415 km (0.098 R)
Kuiper Belt
Range: 30 - 45 AU
Composition
Type: Dwarf Planets/TNOs (Ices)
Reservoir of dwarf planets and volatile ices.
Outer System
Oort Cloud
Range: 310 - 10,723 AU
Composition
Type: Cometary Reservoir
System's final boundary, containing trillions of icy planetesimals.